{"coeffs": [-2.1767990607077053e-07, -3.064411088092785e-08, -0.26730634723713015, 0.013912159607417013], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.6906136908026506e-08, 1.0578990591933022e-08, 0.014501671641027418, 0.010527388373652512], "covariance": [[2.8581746515293596e-16, -2.9294332895904513e-18, 8.003941336705462e-11, -5.240818199429091e-11], [-2.9294332895904536e-18, 1.119150419442074e-16, 2.4195653124601388e-11, 1.4325247621729054e-11], [8.00394133670546e-11, 2.4195653124601394e-11, 0.00021029848038417882, -3.8429511965844645e-05], [-5.2408181994290916e-11, 1.4325247621729054e-11, -3.8429511965844645e-05, 0.00011082590596971407]]}